Samantha J Holdsworth1, Wendy W Ni1, Greg Zaharchuk1, Michael E Moseley1, and Mahdi S Rahimi1
This
work introduces a new visualization method called amplified Magnetic Resonance
Imaging (aMRI), which uses Eulerian Video Magnification to amplify subtle
spatial variations in cardiac-gated brain MRI scans and magnify brain motion. This approach reveals
deformations of brain structures
and displacements of arteries due to cardiac pulsatility, especially in the brainstem,
cerebellum, and spinal cord. aMRI has the
potential for widespread neuro- and non-neuro clinical application, because it
can amplify and characterize barely perceptible motion, and allows visualization
of biomechanical responses of tissues using the heartbeat as an endogenous
mechanical driver.
